Dirac's inspired point form and hadron form factors

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Dirac ’ s inspired point form and hadron form factors

Noticing that the " point-form " approach referred to in many recent works implies physics described on hyperplanes, an approach inspired from Dirac's one, which involves a hyperboloid surface, is presented. A few features pertinent to this new approach are emphasized. Consequences as for the calculation of form factors are discussed.

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Hadron form factors using density-density correlators

Gauge invariant density-density correlators yield detailed information on hadron structure. Hadron deformation and form factors can be extracted for momentum transfers up to about 6 GeV 2. We use stochastic techniques and dilution to compute the all to all propagator required for the exact evaluation of density-density correlators. We present first results for the pion form factor.

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ژورنال

عنوان ژورنال: Nuclear Physics A

سال: 2005

ISSN: 0375-9474

DOI: 10.1016/j.nuclphysa.2005.03.032